<!DOCTYPE html>
<title>Table collapsed column background image geometry</title>
<link rel="author" title="Aleks Totic" href="atotic@chromium.org" />
<link rel="help" href="https://www.w3.org/TR/css-tables-3/#drawing-backgrounds-and-borders" />
<link rel="match" href="background-image-column-collapsed-ref.html" />
<style>
  body {
    --peek: LightGreen;
  }
  .bg {
    background-color: var(--peek);
    background-image: linear-gradient(90deg, orange 0px, orange 10px, gainsboro 3px, gainsboro 25%, rgba(160,160,160,0.5) 25%, rgba(160,160,160,0.5) 50%, silver 50%, silver 75%, darkgray 75%, darkgray 170px, blue 170px);
    background-repeat: no-repeat;
  }
  main * {
    box-sizing: border-box;
  }
  main table {
    border-spacing: 10px;
    border: 10px solid transparent;
    padding: 10px;
    border-collapse: collapse;
  }
  main table:hover {
    border: 10px solid yellow;
  }
  main td {
    width: 50px;
    height: 50px;
    padding: 0px;
  }
</style>
<body>
<main>
  <table>
    <col class="bg">
    <col class="bg">
    <col>
    <colgroup class="bg" span="2">
    <tr>
      <td rowspan=4></td>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td rowspan=2 colspan=2></td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td></td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
  </table>
</main>
</body>
